Petar A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

✅ Professional Penetration Tester ✅ 3500+ Hours ✅ Top Rated Plus Freelancer Security Researcher and Penetration Tester recognized by the U.S. Department of Defense, AT&T, Sony, and Semrush for the responsible disclosure of 40+ vulnerabilities via HackerOne. Since 2022, an active member of the Synack Red Team - an elite tier of offensive security specialists vetted through rigorous technical and background screening. Every engagement concludes with a comprehensive technical report built to satisfy the specific penetration testing controls required for HIPAA, ISO 27001, SOC2, and PCI-DSS. I provide a high-level executive summary for stakeholders alongside deep-dive technical findings, fully reproducible Proofs-of-Concept (PoC), and prioritized remediation steps to ensure your team can effectively close every gap before your audit. Specializing in black and gray box testing of live web applications, cloud environments, and networks, covering all common attack vectors, business logic flaws, and discovering previously undisclosed vulnerabilities (0days) to prevent high-impact data breaches. Service Description: 1) Web Application Penetration Testing (OWASP Top 10, PTES, ASVS, Business Logic Testing) 2) Mobile Application Penetration Testing (OWASP Top 10, MASVS, MASTG, PTES) 3) Network Penetration Testing (Active Directory, Entra ID, Internal & External Network) 4) API Security Testing - REST, GraphQL, SOAP, gRPC, Webhooks (OWASP API Top 10) 5) Cloud Security Testing - AWS/Azure/GCP/OCI/Alibaba/IBM/DigitalOcean/SaaS/IaaS/PaaS 6) Cloud-Native & Container Security (Kubernetes, Docker, OpenShift, EKS/AKS/GKE) 7) LLM Security Testing (OWASP LLM Top 10, Prompt Injection, Data Poisoning) Tools used in engagements: BurpSuite Professional | Custom Python scripts | BloodHound | Impacket Framework | Responder | Metasploit | Mimikatz | Nuclei | Nmap | FRIDA | Android Studio | Postman Identify and secure your applications and infrastructure, before threat actors exploit it! Message me to discuss your project requirements.